Abstract

The species diversity of the genera Mononchus Bastian, 1865 and Coomansus Jairajpuri & Khan, 1977 was assessed in a study of the mononchid nematodes from a wide range of riparian habitats in Bulgaria. Four species were identified based on morphological and morphometric data: Coomansus parvus (de Man, 1880), Mononchus truncatus Bastian, 1865, Mononchus pseudoaquaticussp. nov., and Mononchus sp. The first three species were characterised both morphologically and molecularly (18S and 28S rRNA gene sequences) and the integration of these data and phylogenetic analyses provided support for their distinct species status. This paper provides detailed descriptions, morphometric data for multiple species populations, drawings and photomicrographs, and the first taxonomically verified sequences for C. parvus (n = 6), M. truncatus (sensu stricto) (n = 4) and M. pseudoaquaticussp. nov. (n = 3). Comparative sequence and phylogenetic analyses suggested that the utility of the 18S rRNA gene for species delimitation is rather limited at least for some species complexes within the genus Mononchus. At the generic and suprageneric level, the 18S and 28S rDNA phylogenies both recovered the three genera represented by two or more species (Mononchus, Mylonchulus, and Parkellus) as monophyletic with strong support, the Mononchidae as paraphyletic, the Anatonchidae as monophyletic, and there was no support for a sister-group relationship between Mylonchulus and Mononchus. A key to the species of Mononchus is provided to facilitate the identification of the currently recognised 31 species.

Addeddate

2025-03-26 21:08:53

Bhl_virtual_titleid

210914

Bhl_virtual_volume

v.1206 (2024)

Call number

10_3897_zookeys_1206_124237

Call-number

10_3897_zookeys_1206_124237

Foldoutcount

0

Genre

article

Identifier

integrativetaxo1206alta

Identifier-ark

ark:/13960/s2z55qkq76s

Identifier-bib

10_3897_zookeys_1206_124237

Identifier-doi

10.3897/zookeys.1206.124237

Ocr

tesseract 5.3.0-6-g76ae

Ocr_detected_lang

en

Ocr_detected_lang_conf

1.0000

Ocr_detected_script

Latin

Ocr_detected_script_conf

1.0000

Ocr_module_version

0.0.21

Ocr_parameters

-l eng

Page_number_confidence

0

Page_number_module_version

1.0.5

Page_range

137-180

Pages

44

Pdf_degraded

invalid-jp2-headers

Pdf_module_version

0.0.25

Possible copyright status

In copyright. Digitized with the permission of the rights holder.

Ppi

300

Source

ZooKeys 1206

Year

2024

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